I couldn't help myself and just had to order some stuff from Vistaprint again.
Of course, if you use the Very Very Special Offers Just For You - Hurry! that you can get by e-mail, the prices are quite reasonable. edko66 had forwarded me some of the mails (for some reason they'll only ever send me the American offers, no matter how often I try to tell the website that those aren't the one I want), so I could simply pick the best offers.
The best offers happened to come with free picture uploads. Good moment to make some new BookCrossing postcards to tuck into books, send to other BookCrossers or sneak into the Free Postcard-racks in OBCZs.
And perhaps some new stickers for labeling books would be nice, too.
So here's what I came up with: